Figure 3.

Sequencing of DNA fragments containing x. Peak patterns of sequencing with fragment 1 containing one x (a and b) and fragment 2 containing two xs at predetermined positions (c and d), in the absence of (a and c) or in the presence of (b and d) 0.6 mM dyTP . The sequences described above the peak pattern show the product sequences. The arrows indicate the positions of x in the fragments.